88156-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 88156-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,1,5 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 88156-81:
(7*8)+(6*8)+(5*1)+(4*5)+(3*6)+(2*8)+(1*1)=164
164 % 10 = 4
So 88156-81-4 is a valid CAS Registry Number.
88156-81-4Relevant articles and documents
Conversion of Tetrahydroisoquinolinium Salts into Benzazepines
Smith, Stephen,Elango, Varadaraj,Shamma, Maurice
, p. 581 - 586 (2007/10/02)
Rearrangement of tetrahydroisoquinolinium salt 3 upon treatment with potassium tert-butoxide in tert-butyl alcohol gives benzazepine 5.Similar treatment of salt 11 yields mostly cis benzazepine 13 together with a little trans 14.In like fashion, a mixture